United States Economy
The United States of America has the world’s largest national economy. It makes up roughly 17 to 22 percent of the world’s gross domestic product (GDP). The currency of the United States, the dollar, is the most widely used currency in international trade, as well as the world’s foremost reserve currency. In fact, several nations other than the United States use the US dollar as their own currency: including the British Virgin Islands, Ecuador, Panama, the Bahamas, Turks and Caicos, Vietnam, Cambodia, Nicaragua, and Belize.


